Malicious PDF — malware analysis report

Static analysis result for SHA-256 6215dbd399909aef…

MALICIOUS

PDF

80.4 KB Created: 2021-07-07 06:57:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: eeb5c073367e33c4adb7636b0876a41c SHA-1: 956770c5df81700df16a27e4448de2cbebc8be3e SHA-256: 6215dbd399909aef6c69281ee4fab8f5be5d14ee5d77367e080f2c2dbbe58e43
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4210

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://usaoxin.com/userfiles/2021-6/file/kodutajovinive.pdf In PDF document text
    • http://bandenplaats.nl/cmsimages/file/jugavaxizofizanufimavan.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/27531118213.pdfIn PDF document text
    • https://path.mn/userfiles/files/10520014028.pdfIn PDF document text
    • https://vongtaytramhuong.vn/upload/files/7058125919.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609c77c9ed150---wazaxuwujidupe.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/87542075535.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b46810b3976---gogatovazunamisusa.pdfIn PDF document text
    • http://teenaramainc.org/clients/875997/File/mupubu.pdfIn PDF document text
    • http://dzstock.com/Upfiles/file/levoriduzuf.pdfIn PDF document text
    • https://aviseco.ro/userfiles/file/fumijuxegumo.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/numogutexewewuwedurat.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b26fe9ad3---lazenininaxin.pdfIn PDF document text
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/6990177148.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5fab12deb5---70581473189.pdfIn PDF document text
    • http://chinahongji.com/d/files/11613526188.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/60d476bfe1c670f87e8eec89327229d1/72555889834.pdfIn PDF document text
    • http://thecoferfamily.com/clients/7/78/7892d776c92a08c80f86ebc6236678d2/File/41008976719.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/6a41245ac1c1f0502997651f70cbdd5f/73405152095.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b30c90fef---fenedunijuzojumano.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/f8fe133a0fba4f4b6b7700018f03e948/56784205288.pdfIn PDF document text
    • http://akhsmombasa.com/clients/861898/File/53421953157.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d0807324bb---jokabazirororurujaki.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/42bf8c6e8c61e85967eeb15788443799/jomupisorizuf.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/11567699696.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=jesus+and+the+holy+spiritPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 10692 bytes
SHA-256: 8a1bf20b8fef124886451a9334ecee3053fcf3b0393e34a3e6e5843ec59ad97a
font_01_sfnt_off00011170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11170 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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